Ur, P. Discussions that work: Task-centred fluency practice (1a ed., 8a reimpresión.).
Čikaški stil citiranja (17. izdanje)Ur, Penny. Discussions That Work: Task-centred Fluency Practice. 1a ed., 8a reimpresión.
MLA način citiranja (8. izdanje)Ur, Penny. Discussions That Work: Task-centred Fluency Practice. 1a ed., 8a reimpresión.
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